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Finding the Fourth Proportional to 109,363.48, 150,916.02 and 61,619.64

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Solution

The fourth proportional to 109,363.48, 150,916.02 and 61,619.64 is: 85,031.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,363.48 : 150,916.02 = 61,619.64 : x
  2. Step 2: Convert to fraction form
    109,363.48/150,916.02 = 61,619.64/x
  3. Step 3: Cross multiply
    109,363.48x = 150,916.02 × 61,619.64
  4. Step 4: Simplify right side
    109,363.48x = 9,299,390,822.63
  5. Step 5: Solve for x
    x = 9,299,390,822.63/109,363.48
  6. Step 6: Final answer
    x = 85,031.96

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.